/Engine/Source/Developer/MeshUtilities/Public/MeshUtilities.h
Calculates MikkTSpace Tangents for a given set of vertex data with normals provided
void CalculateMikkTSpaceTangents ( const [TArray](API\Runtime\Core\Containers\TArray)< FVector3f > & InVertices, const [TArray](API\Runtime\Core\Containers\TArray)< uint32 > & InIndices, const [TArray](API\Runtime\Core\Containers\TArray)< FVector2f > & InUVs, const [TArray](API\Runtime\Core\Containers\TArray)< FVector3f > & InNormals, bool bIgnoreDegenerateTriangles, [TArray](API\Runtime\Core\Containers\TArray)< FVector3f > & OutTangentX, [TArray](API\Runtime\Core\Containers\TArray)< FVector3f > & OutTangentY ) const